Ejector Design Calculation Xls

Ejector design calculation spreadsheets typically include automated formulas to determine the entrainment ratio compression ratio physical dimensions

If you design multiple ejectors for different clients, log each design in a database sheet and analyze trends (e.g., which CR range gives highest efficiency). ejector design calculation xls

2. Diffuser Throat Diameter ($D_t$):

This is often sized based on a specific velocity (Mach 1) at the mix pressure. A common heuristic formula used in XLS sheets for steam: $$D_t \approx \sqrtd_t^2 \times \left( \fracP_mP_s \right)^0.5 + \textSuction Area Factor$$ (For exact calculation, you must determine the specific volume of the mixture at the diffuser throat). Built-in steam tables (via VBA user-defined functions) for

Step 6 – Throat diameter of ejector:

formulas to determine the physical diameters of the nozzle and mixing throat. Further Exploration View a detailed PDF breakdown of Steam Ejector Design Calculations on Scribd. Learn about Thermodynamic Modeling for compressible fluids in ejectors from HAL. Explore a specialized Online Ejector Screening Tool for preliminary gas ejector sizing. empirical constants for a particular gas or steam condition? Steam Ejector Design Calculations | PDF - Scribd ejector design calculation xls

For compressible fluids: [ A_t = \fracW_motiveP_1 \cdot \sqrt\frac\gammaR_gas T_1 \cdot \left(\frac2\gamma+1\right)^\frac\gamma+1\gamma-1 ] (Implemented as Excel formula with named constants)

Step 3: Momentum Balance in the Mixing Section (Most Critical)

• Built-in steam tables (via VBA user-defined functions) for steam.
• External REFPROP links (via COM add-in) for complex gases.
• Approximate polynomials for ideal gases.